No feedback / solution

Dear people, My Pajero were with Mitsubishi Rivonia last year May for 3 weeks, to have a starter reconditioned. I got the same problem 2 weeks ago, and my car has been with them since. I get no feedback, so solution offered. I have reached the end of my patience, as I have no transport, and no-one seems to give a damn. If legal action is the way to go, I am up for it, because I am convinced nothing else will get a reaction. When I ask for an update, its all hands in the air because the external party involved seem to have all the power. What do you suggest?